[SCIP] Infeasible with C-API but feasible with Interactive Shell

[Levinson, Richard J. (ARC-TI)[SGT, INC]]

Hello,

I have a SCIP model generated using the C-API. It returns 'infeasible' when I call solve() programmatically, but if I copy the SCIP "original problem" output from the SCIP log file of the 'infeasible' run, and copy it directly into a .cip file and read it back in through the interactive shell, then it is 'feasible'.

The C-API is being linked against SCIP 4.0 but the model is feasible in the SCIP 4.0 interactive shell (as well as the SCIP 6.0 interactive shell).

Any suggestions about how to diagnose and resolve this discrepancy? I need to be able to generate the model and solve via C-API. Is there a good way to figure out why it's being marked infeasible via the C-API?

Thank you,

   Rich Levinson
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://listserv.zib.de/pipermail/scip/attachments/20180710/c5e323ac/attachment.html>